probiotics bacteria . biology, science microscopic medicine. digestion stomach escherichia coli, treatment, health care

metabolism microbiome decomposers reproduction division microorganisms cells symbiotic aerobic methanogens infection harmful pathogenic replication resistance microscopic pathogens anaerobic acidophiles plasmids nitrogen prokaryotes sell flagella shapes thermophiles growth antibiotic grampositive bacillus coccus probiotic extremophiles cellwall germs nitrogenfixation gramnegative microbes geneticmaterial halophiles spiral binaryfission colonies unicellular bacteria microflora dna organisms beneficial ai generated